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Commit 9346c2a8 authored by Jie Liu's avatar Jie Liu Committed by Konrad Rzeszutek Wilk
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xen: simplify balloon_first_page() with list_first_entry_or_null()



Replace the code logic at balloon_first_page() by calling
list_first_entry_or_null() directly.  since here is only
one user of that routine, therefore we can just remove it.

Signed-off-by: default avatarJie Liu <jeff.liu@oracle.com>
Signed-off-by: default avatarKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Reviewed-by: default avatarDavid Vrabel <david.vrabel@citrix.com>
parent 02bcf053
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+1 −8
Original line number Diff line number Diff line
@@ -157,13 +157,6 @@ static struct page *balloon_retrieve(bool prefer_highmem)
	return page;
}

static struct page *balloon_first_page(void)
{
	if (list_empty(&ballooned_pages))
		return NULL;
	return list_entry(ballooned_pages.next, struct page, lru);
}

static struct page *balloon_next_page(struct page *page)
{
	struct list_head *next = page->lru.next;
@@ -328,7 +321,7 @@ static enum bp_state increase_reservation(unsigned long nr_pages)
	if (nr_pages > ARRAY_SIZE(frame_list))
		nr_pages = ARRAY_SIZE(frame_list);

	page = balloon_first_page();
	page = list_first_entry_or_null(&ballooned_pages, struct page, lru);
	for (i = 0; i < nr_pages; i++) {
		if (!page) {
			nr_pages = i;